Circuit continuing device



Sept. 26, 1933. DOUGLAS 1,928,413

CIRCUIT CONTINUING DEVICE Filed May 9, 1929 Patented Sept. 2 2c, 1933 *My invention relates'to circuit continuing devices and is of particular service in connection with those circuit continuing devices which are in the form. of incandescent lamps, though the invention is not to be thus limited.

I provide a'shell within which the contact carrier is rotatable and having a slot in its side that extends crosswise of the shell, a handle e'xof this spring presses against the bushing and tending into the shell and confined to one plane of movement and'h aving sliding connection with the contact carrier isinclusive of 'soeka for the lamp," and also, of the lamp base which is separably received within thesocketand which constitutes a contact carrying plug, a contact being provided upon the inner end face of the plug. A spring is employed which presses against a shoulder upon the shell at 'oneend of the spring and against a'forward portion of the socket at the other end of the spring which aids in the separating movement of the contacts and which desirably cooperates with'one wall of the slot in confining the handle to one plane of movement;

the spring desirably this slot wall. I

The invention will be more fully explained in connection, with the accompanying drawing in which Fig. 1 is a side view of the preferred embodiment of the invention, portions being shown in section; Fig. 2 is a view, on a larger scale, taken'at right angles to the direction'in which pressing the handle against Fig. 1, is taken, parts being broken away'and other parts beingshown in section; Fig. 3 is a sectional view on line 3-3 of Fig.1; Fig. 4 is a sectional view'on line 44= 'oi Fig. 3; Fig. 5 is a sectional viewon line 5+5 of Fig. 4; and Fig.

6 is a sectionalview on line 6- -6 of Fig. 3.

The structure illustratedisinclusive of a gen-- erally' cylindrical shell lwhichfis reduced at one end and there threadedto receive a nut 2which is employed to clamp the";shoulder 3 of the shell in assembly with a support 4, which sup- .port may be thedash board' of an automotive vehicle. I have shown a distance preserving hollow washer 6 which may be interposed between the nut and the support. The shell constitutes a contact carrierto which end acontact carrier 55 2 ring 7,'of insulation, is "assemble'clwith thei'ear end of the shell. This ring of insulation is provided with a metallic bushing 8 that receives a metallic sleeve 9 which is slidable in the bore of thebushing. A circuit continuing conductor 10 enters the sleeve 9 and is electrically connected with a contact button 11 at the'inner end of the sleeve. A coil spring 12 surrounds'the portion of the slevethat is within the casing. One end the other end presses against the contact button whereby this button is forwardly pressed. The limit -to which the button may be forwardly pressed is determined by'the flange 13 which is provided upon the rearflend of the sleeve 9, this flange being adapted for abutting engagement with the bushing. A contact 14, which is complemental to the contact '11, is provided upon a plug 15. I This plug, in the embodiment of the invention illustrated, also constitutes a base of an incandescent lamp. A filament 16 of this lamp is located within the glass bulb 17: and has one terminal connected with the contact button 14. The other terminaloi this filament'is connected with a metallic sheath The'lamp socket 18 is provided with diametrically opposite bayonet channels 19 which receive the bayonet pins or projections 20that are provided upon and project laterally from the plug 15. These bayonet pins or projections are receivable at the front ends of the bayonet channels and pass along the bayonet channels longitudinally ofthe structure until the inner ends of the channels are reached whereaiter the plug is turned to bring the said bayonet projections into the bayonet seats. The lainp 'socket and lamp bore thus collectively constitute a contact carrier.

A coil spring 21 surroundslthe lamp socket and at its inner endpresses in part upon the shoulder 3 through the intermediation of a member presently described; The outer end of the spring presses against the flange 22 which is formed upon the front endof the socket. When the socket is moved forwardly the contacts 11 andl l are separated. When the socket is moved inwardly these contacts are engaged, the contact 11 then moving slightly to the rear against the force of the spring 12. r

The handle 23 projects through a slot 24 which is 1 formed crosswise of and through the fshelL. The portion of the handle upon theexterior of the shell is suitably formed for engagement by a thumb and finger. The inner end of the handle is desirably in the form of a ring 25 which surrounds the socket. Two prongs 26 and 27are f-Ormedupon the inner end of the handle, these prongs being radial continuations of the ring 25. Said prongs embrace a rib or finger 28 provided upon the lamp socket and separated at its sides from the lamp socket by the slots or channels 6 29 and 30 and the continuation of the bayonet channel 19 thatextends beyond the seats for the bayonet projections 20. When the handle is turned it presses upon the rib or finger 28 to turn the lamp socket in one direction or the other. '.I employ two prongs. 26 and 27 since neither slots 29 or 30 has longitudinal walls which are long enough to permit of the use of but one prong, the slot 29 terminating materially short of the rear end of thesocket and one wall of the slot being discontinued by'aeason 'ofthe transverse continuation of the bayonetnhannel '19 into this latter channel. However, I do not wish to be limited to the-employmentmf two-- jections '35 into the bayonet channels 31, 32 and the rib or.fi nger 28 between the prongs 26 and 2'7.

groove 38 to receive the remaining bayonet projection and the prong 27 upon the handle, in the process of assembly. In the process of assembly the thumb piece 23 of the handle is initially in the plane of the ring 25. The entire handle is inserted within the bore of the shell, the thumb portion 23 of the handle thereafter being projected outwardly through the slot 24,

the ring; being suitably positioned-for this purpose. 'When the ring is brought toits position transverse of the shell the thumb piece 23 is turned by pliers, at right angles to the plane of :said ring. The lamp socket is next inserted and suitably manipulated to bring the bayonet pro- The device may be constituted a cowl lamp structure: by the provision of a bead 40 upon and about midway of the larger portion of the shell to aflord a shoulder to limit the extent to which 5 the cylindricalcowl ll-may be slipped upon'the shell and to prevent the cowl from reachingthe handle. Thiscowl may'have a side. opening 42 .in the part thereof that-projects forwardly bezhandleto a'plane of rotation which is preferablyperpendicular to-the axis of the shell. ,Dia metrically opposite from the slot 24 the spring 530: 21 presses-the handle against the shoulder 3. The

:-each--channel-'3l and a seat- 34 is provided .in ='each channel branch 32. The cam formation upon the shell is desirably inclusive of two bayonet projections'or pins 35 which may be inward- M15 -ly punched portions of'said shell. 'When the lamp yond the shelland throughwhich opening :the lightfrom the lamp may pass. i The COW1Td8 sirablyturns upon the shell so- :that the position of the opening may be adjusted to. determine lthe. direction 1 in which the .light flows.

Changes may be-made-without departingfrom-- the invention.

Having thus describedmy invention, Lelaim:

1'. The combination witha shellyofasocket surrounded-by the shell and'movable along .the

i is desirably perpendicularto the axis of the socket. Aseat 33 is provided at the rearend oi socketris turned by the handle the-aforesaid- :icam formations i upon the shell and socket :causethe socket tomove'lengthwise of the shell. i-As:the:socket moves lengthwise of :theshell, the :':rib:or finger :28moves' lengthwise of ithelshell rand between theprongs 26 and 27. ,The shell- :"thus moveswiththe handle in the rotary direc- =tion'of movement of 1the'handle but with respect "handle and lamp socket are thus in splined conaito the. handle longitudinallyof-the shell. The

nection. When-the handle is turned'to full ex- ..tent=in one direction, theseats are positioned :"to receive-the bayonet projections 35,- the' lamp circuit :being :thenopened. When the handle bore thereof; a spring pressing upon said socket; a plug within and carried by said socket; 'complemental-contacts respectively disposed uponthe plug and; shellyand a handle passing laterally through the shell and having connection with the socket to turn thesocket, saidshell and sock-- .115

ethaving interengaging cam formations -forcing longitudinal movement of the socket: as the socket. is turnedhby the handle, said contacts being positioned to be-engaged when-the socket ismoved longitudinally of the shell in one direc tion andto. be separated when the longitudinal movement of thesocket is reversed, wherein-the .shell has: a guidingslotextending substantially .at right angles to theshellaxisandthrough which the handle projects and by a wall of which-4 the handleis guided.

2. Thecombination with a 'shell; .ofasocket surrounded by. the. shellv andmovable along the bore thereof; a spring pressing upon said socket; aplug within. and carriedby said-socket; complemental contacts respectively disposed upon the .plug and shell; and.a handle passing-laterally Pris turned to itsiull extent in the other direction,

through .the shell andhaving connection with the. socket to turn the socket, saidfshelLand socket..having interengaging cam i formations-l 5 forcing longitudinal movement of the socket .as

-. the socket is turned by thehandle, said contacts .being positioned to be engaged when the socket i 'inwardlyi. projecting tongue 36 upontheshelh this tongue being positioned to'engage. the corner portion 37 oflthe lamp socket when the parts Referring. more particularly to Fig; 4:- a groove '":of assembly. A similar groove-39-is-pressed into is moved longitudinally of.the shell. in one direction and to. be separated when .the longitudinalmovement of thesocket is reversed, wherein .the shell has a guiding slotextending substantially at right angles tothe shell axis'and through which'the handle projects and by a Wall of which the handle is guided'andwherein .thespring '38ilS pressedinto the lamp'socket longitudinally :Ithereof to-receive the bayonet projection 35 that- --'."'appears uppermost in this figure; inlthe process :the lamps socket :longitudinally-opposite the ipresses'the handle-upon the guiding wall of the slot.

3.-'Ihe combination with a shell reduced. at

-' one end to .form a shoulder; of. a socket movable therewithin irotatively and. longitudinally; a

7 1,928,413 spring pressing against said shoulder at one end and at its other end pressing said socket away from the shoulder; a handle passing laterally through the shell and rotatable with the socket, said handle being interposed between the spring and shoulder and the spring pressing upon the handle to define the plane of rotation of the handle. it a 4. The combination with a shell; of a member movable therein rotatively and longitudinally; a handle splined to rotate the member, said memher and handle being relatively movable longi-v tudinally of themember; a slot in the shell extending at right angles to the shell axis through which the handle projects and by whichthe handle is guided in a plane of rotation at right angles to the shell axis; and interengaging cam formations on the shell and member forcing longitudinal movement of the member with respect to the shell and handle as the member is rotated by the handle. V I

5; The combination with a shell; of a socket movable therewithin rotatively and longitudi- ,nally; an annular handle surrounding the socksocket forcing longitudinal movement of the socket in the shell in one direction against the pressure of said spring as the socket is rotated by the handle and in the opposite direction with the cooperation of said spring.

HARRY A. DOUGLAS. 

